Glass fiber pultruded cross arms are widely used in the construction of overhead power transmission and distribution lines.
They are commonly used in countries such as the United States, Canada, Australia, and Malaysia for their high strength,
durability and resistance to corrosion. They are also used in offshore wind farms for their high resistance to salt water
corrosion.Glass fibercross arms pultruded tube are a popular alternative to traditional wooden and steel crossarms due to
their lightweight, easy installation, and reduced maintenance costs. Usually, the materials used for cross arms in
transmission towers are wood, steel and glass fiber. Compared with the other two materials, the composition of glass fiber
is larger. This is because glass fiber is non-conductive and has a higher mechanical strength to weight ratio. These charact
-eristics make the glass fiber cross arm have great potential in replacing steel and wood cross arms. Traditionally,
transmission tower structures use treated wood, steel or concrete as building materials. In recent years, the adaptability of
glass fiber in cross arm production has been applied. This is because the surface of the glass fiber is smooth and firm, and
the outer layer has a film, which can protect the inner surface of the Fiberglass Pultruded cross arm Power that may cause
flashover.
| Width/Height/Thick ness mm |
Weight g/m |
|
| 50×50×4 |
50×50×4 |
with cap die |
| 50×50×6 |
2000 |
|
| 70×70×5 |
2540 |
|
| 75×75×5 |
2800 |
with cap die |
| 100×100×5 |
3750 |
with cap die |
| 100×100×6 |
4500 |
|
| 100×100×10 |
7060 |
with cap die |
| Crossarm |
Electrical Strength |
| AC Voltage |
CFO Voltage |
| Dry |
Wet |
Dry |
Wet |
| Wood |
Insulation |
Conduction |
Insulation |
Insulation |
| Fiberglass |
Insulation |
Conduction |
Insulation |
Insulation |
1. Particularly weather-resistant in coastal areas.
2. Lightweight for easy installation in hilly areas.
3. Avoid bird problems.
4. Continue to supply power even after insulator rupture 5.Smaller size insulators can be used, reducing the cost of the
insulators.
| Solid / hollow cross arms |
| Polyurethane foam filling |
No polyurethane foam filling |
| Improve the rigidity of the cross arm |
Weaker hardness |
| Prevent plastic deformation |
Easy to deform |
Manufacturing Technique
| Glass Fiber + Resin System |
| Part No |
Resin Base |
Application |
Temperature resistance |
Corrossion resistance |
Flame resistance |
| VE |
Vinyl Ester |
Superior Corrosion Resistance and fire retardant |
Very Good |
Excellent |
Very Good |
| ISO |
Isophthalic Polyester |
Industrial grade corrosion resistance and fire retardant |
Good |
Good |
Good |
| ORTHO |
Orthophthalic resin |
Moderate corrosion resistance and fire retardant |
Common |
Common |
Common |
| EPOXY |
EPOXY Resin |
|
|
|
|
Technical Date
| FRP cross arm technical parameters |
| No |
Item |
Unit |
Performance |
| physical properties |
| 1 |
proportion |
g/cm3 |
1.9~2.0 |
| 2 |
Glass fiber content |
% |
58~65 |
| 3 |
water absorption |
% |
≤0.2 |
| Mechanical properties |
| 4 |
Barcol hardness |
|
≥55 |
| 5 |
Tensile strength (longitudinal) |
Mpa |
≥550 |
| 6 |
Tensile Strength (Transverse) |
Mpa |
≥65 |
| 7 |
Bending Strength (Longitudinal) |
Mpa |
≥600 |
| 8 |
Bending Strength (Transverse) |
Mpa |
≥70 |
| 9 |
Hole edge extrusion strength (longitudinal) |
Mpa |
≥90 |
| 10 |
Hole edge extrusion strength (Transverse) |
Mpa |
≥50 |
| 11 |
Shear strength |
Mpa |
≥15 |
| Electrical properties |
| 12 |
breakdown voltage |
kv/mm |
≥10 |
| 13 |
Arc resistant |
S |
≥180 |
| 14 |
Compared with electric trace index |
V |
≥600 |
| 15 |
Volume resistivity |
Ω·cm |
1.0*1012 |
| 16 |
Surface resistivity |
Ω·cm |
1.0*1012 |
1. What is your minimum order quantity?
Our MOQ is 1 meter.(Without limiting sizes and specification,according to actual situation)
2. How can I get samples to check your quantity?
We can offer samples for free.
3. Can you do the production as customized?
Yes, we have a professional technique team, we could produce the fiberglass depends on your requirements.
4. What length of the fiberglass profiles?
Any length can be cut. according to customer requirements.
5. How to pay?
Usually by T/T, L/C also ok.
Audited Supplier 
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